package jdbc;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

/**
 * 执行DML中的INSERT操作
 */
public class JDBCDemo2 {
    public static void main(String[] args) throws Exception {
        Class.forName("com.mysql.cj.jdbc.Driver");
        Connection connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/tedu?characterEncoding=utf8&useSSL=false&serverTimezone=Asia/Shanghai&rewriteBatchedStatements=true",
                "root",
                "root");
        Statement statement = connection.createStatement();
        /*
            向userinfo表中插入一条记录
            INSERT INTO userinfo(username,password,nickname,age)
            VALUES('张三','123456','阿三',22)


         */
        String sql = "INSERT INTO userinfo(username,password,nickname,age) " +
                     "VALUES('张三','123456','阿三',22)";

        System.out.println(sql);

        /*
            int executeUpdate(String sql)
            用来执行DML语句的方法(INSERT,UPDATE,DELETE)
            返回值为一个整数表示执行SQL后影响了表中多少条记录
         */
        int num = statement.executeUpdate(sql);
        if(num>0){
            System.out.println("插入成功");
        }

        connection.close();
    }
}
